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SpaceWire 101 Seminar MAPLD 2006 SpaceWire origins and purpose   From IEEE 1355 to ECSS-E-50-12A Ph. Armbruster TEC-E PowerPoint Presentation
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SpaceWire 101 Seminar MAPLD 2006 SpaceWire origins and purpose   From IEEE 1355 to ECSS-E-50-12A Ph. Armbruster TEC-E - PowerPoint PPT Presentation


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SpaceWire 101 Seminar MAPLD 2006 SpaceWire origins and purpose   From IEEE 1355 to ECSS-E-50-12A Ph. Armbruster TEC-ED Head of Data Systems Division ESA/ESTEC. Contents A little bit of History – Transputers and Links Serial links and Packet routing – Reference Architecture

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Presentation Transcript
slide1

SpaceWire 101 Seminar

MAPLD 2006

SpaceWire origins and purpose  From IEEE 1355 to ECSS-E-50-12A

Ph. Armbruster TEC-ED

Head of Data Systems Division

ESA/ESTEC

Introduction

slide2

Contents

  • A little bit of History – Transputers and Links
  • Serial links and Packet routing – Reference Architecture
  • From IEEE1355 to ECSS-E50-12A (SpaceWire)
  • SpaceWire Standard (SpW), a standard for Space Applications
  • SpaceWire Working Group – Meeting Schedule
  • ESA Developments
  • Perspectives

Introduction

slide3

A little bit of History – Transputers

The INMOS transputer was a pioneering concurrent computing microprocessor design of the 1980s from INMOS, a British semiconductor company based in Bristol. For some time in the late 1980s many considered the transputer to be the next great design for the future of computing. Today, this interesting chip is largely forgotten.

Whilst ultimately a commercial failure, the transputer architecture was highly influential in provoking new ideas in computer architecture, several of which have re-emerged in different forms in modern systems.

Source: http://en.wikipedia.org/wiki/Transputer

The T9000 new packet-based link protocol was called DS-Link and later formed the basis of the IEEE 1355 serial interconnect standard (IEEE Std 1355-1995 Standard for Heterogeneous InterConnect (HIC) Low Cost Low Latency Scalable Serial Interconnect aka ISO/IEC 14575 DIS)

Introduction

slide4

A little bit of History – Transputers and Links

  • DS-Link: Serial, asynchronous, Symmetrical, Flow-Controlled, Point-to-point Interface
    • • Data/Strobe, 100Mb/s+
    • • Packet protocol, Routing switches
    • • Modular
    • • Scalable

Introduction

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Modules

based on

Hi-Rel components

Modules based on COTS

Optional

Module

Instrument

Memory Module

Context Saving Memory

Data

Compression Module

Memory banks

Memory banks

I/O

Module

Instrument

Telemetry

Formatter

/Encryption Module

Transmitter

SpW

Router

SpW

Router

CCD/APS Camera

HIVAC

Control Processor module

Dedicated Processor module

DSP

Processor module

RTC

CAN bus

Complex Instrument

Instrument

optional DPU

Spacecraft control bus

SpaceWire links

Control bus/line

Serial links and Packet routing – Reference Architecture

This architecture is used by ESA as a reference for medium-range Data Handling Systems and the definition SpaceWire devices (SpW Router, SpW RTC, SMCS-SpW, …)

Introduction

slide6

From IEEE1355 to ECSS-E50-12A (SpaceWire)

  • The IEEE1355 standard has been defined for commercial, ground based applications.
  • This standard has been revisited by space engineers, federated by the SpaceWire working group, in order to define a standard for space applications, covering: Links, nodes, routers and networks.
  • This work has been done from the physical level (e.g. LVDS, connectors, initialization state machine) up to higher level protocols (e.g. SpW-SnP-RMAP) and currently by mapping CCSDS-SOIS services and protocols on SpW networks.
  • SpaceWire is seen as an open standard. Its is supported by major agencies such as NASA, ESA, JAXA and RSA

Introduction

slide7

SpaceWire Standard (SpW), a standard for Space Applications

http://www.ecss.nl

http://spacewire.esa.int

Introduction

slide8

SpaceWire Working Group – Meeting Schedule

  • First SpW WG Mtg, 15th and 16th (AM) of September 2004
  • Second SpW WG, 10th PM, 11th , 12th (AM) of November 2004  RMAP Draft B
  • Third SpW WG, 15th , 16th , 17th (AM) of February 2005  RMAP Draft C
  • Fourth SpW WG Meeting, 19th (PM), 20th and 21st (AM) of July 2005  RMAP Draft D
  • Fifth SpW WG Meeting, 15th (PM), 16th and 17th of November 2005  RMAP Draft E
  • Sixth SpW WG Meeting, 18th and 19th of May 2006  Focus on Implementation Issues
  • Seventh SpW Meeting – Inter-Agency Meeting 26th of September 2006 focus on
    • SpW Networks and Command and Control applications
    • SpaceFibre

http://conferences.esa.int/01C25/

Introduction

slide9

SpW Working Group Steering Group (Mtg 7)

Steering committee

ESA (Chair) JAXA/ISAS NASA ROSCOSMOS

Ph. Armbruster T. Takahashi G. Rakow A.G. Sukhoroukov

M. Suess M. Nomachi (UoO) R. Schnurr Y. Shenin (UoStP)

SpW WG Coordination. Coordinates/Approves PID allocations and supporting documents. Configuration management of in-preparation and published protocols.

Steering committee supported by:

S. Parkes (UoD) SpW, Standard(s) Editor

SpW Working group contributors/participants: Agency engineering & projects representatives, Representatives from Industry, Experts

Introduction

slide10

Instrument

High Capacity Buffer

High Capacity Buffer

High Capacity Buffer

I/O

Module

Telemetry

Formatter/

Encryption

Instrument

Routing Matrix

Routing Matrix

Control Processor

DedicatedDSP

Processor

DSP

Processor

Transmitter

Instrument 1

DPU

Instrument 2

DPU

Spacecraft control bus

ESA Developments

Introduction

slide11

Perspectives

  • SpW is gaining momentum, used more and more
  • Devices under development to be made available as (ASSP)
  • Run a TopNet Pilot activity
  • Sustain development efforts at protocol level (e.g. for C&C and according to CCSDS-SOIS
  • Prepare the next step with SpaceFibre

TopNet: Pilot activity, decentralised integration

Involvement of different actors (industry, university, agency) in a pilot activity for decentralized integration of SpW-based data handling sub-systems that are geographically separated

Introduction